Champ PH2808 vs Bosch 3312: Oil Filter Compatibility
Compare Champ PH2808 and Bosch 3312 oil filters by compatibility, dimensions, thread size, gasket fit, bypass valve, anti-drainback valve status, and match confidence. Use this comparison as a fitment review, not as an automatic substitution guarantee.
Quick verdict
Large gasket OD variation · Large gasket ID variation
- Thread size is the first hard-fit check for any comparison of spin-on filters.
- Gasket OD and gasket ID are the most important seal-related dimensions.
- Height differences can matter for clearance even when thread and gasket fit appear close.
- Bypass and anti-drainback differences may be important, depending on the application.
Champ PH2808 and Bosch 3312 specifications
| Specification | Champ PH2808 | Bosch 3312 |
|---|---|---|
| Thread size | M20x1.5 | M20x1.5 |
| Gasket OD | 63 mm | 63 mm |
| Gasket ID | 52.1 mm | 52 mm |
| Can OD | 74.73 mm | 80.01 mm |
| Height | 78.99 mm | 75.01 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 8 - 11 | 12 - 15 |
| Anti-drainback valve | Yes | Yes |
What matters most in this comparison?
Thread match: A direct spin-on substitute starts with the same thread size. If the threads differ, the comparison stops there.
Gasket fit: Even when thread size matches, the gasket outside diameter and inside diameter still control whether the filter seals safely against the mounting surface.
Height difference: Small height differences may be acceptable, but longer filters can create clearance problems in tighter installations.
Valve behavior: Bypass and anti-drainback differences can matter in real-world service, especially on cold start or in applications sensitive to oil drain-back.
Related filter pages
- Champ PH2808 oil filter cross reference
- Bosch 3312 oil filter cross reference
- LUBER-FINER PH2808 oil filter cross reference
- Baldwin B179 oil filter cross reference
- Kubota 70000-74034 oil filter cross reference
- Fleetguard LF3691 oil filter cross reference
- Champ PH2876 oil filter cross reference
- Baldwin B421 oil filter cross reference
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.